Quick and hydrated lime dissolution for Ocean Alkalinity Enhancement

Ocean Alkalinity Enhancement is a promising negative emissions technology with high CO2 capture potential, put forward to meet the 2015 Paris Agreement targets. However, most current knowledge relies on numerical models. This dataset present the first laboratory experiments focusing on quick and hydrated lime dissolution in natural seawater, for Ocean Alkalinity Enhancement purposes. The total alkalinity and dissolved inorganic carbon concentration were collected after various alkalinity increases, using different alkaline minerals. The total alkalinity was obtained by potentiometric titration, and the dissolved inorganic carbon concentration was measured with an automated infra-red inorganic carbon analyser, coupled to a LICOR infra-red detector.

海洋碱度增强（Ocean Alkalinity Enhancement）是一种极具应用前景的负排放技术，具备优异的二氧化碳捕获潜力，可用于助力达成2015年《巴黎协定（Paris Agreement）》设定的气候目标。然而，当前学界对该技术的多数认知均依托数值模型构建。本数据集收录了首个面向海洋碱度增强用途、在天然海水中开展的生石灰与熟石灰溶解过程实验室实验。实验中通过采用不同碱性矿物，设置了多组不同幅度的碱度提升梯度，并在各实验结束后采集了总碱度与溶解无机碳浓度数据。其中总碱度通过电位滴定法（potentiometric titration）测得，溶解无机碳浓度则借助联用LICOR红外检测器的全自动红外无机碳分析仪完成测定。